155450015 has 16 divisors (see below), whose sum is σ = 214429248. Its totient is φ = 105974016.

The previous prime is 155449999. The next prime is 155450017. The reversal of 155450015 is 510054551.

It is a cyclic number.

It is not a de Polignac number, because 155450015 - 2⁴ = 155449999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155450017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6782 + ... + 18891.

It is an arithmetic number, because the mean of its divisors is an integer number (13401828).

Almost surely, 2^155450015 is an apocalyptic number.

155450015 is a deficient number, since it is larger than the sum of its proper divisors (58979233).

155450015 is a wasteful number, since it uses less digits than its factorization.

155450015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25858.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 155450015 is about 12467.9595363476. The cubic root of 155450015 is about 537.6878910456.

The spelling of 155450015 in words is "one hundred fifty-five million, four hundred fifty thousand, fifteen".